A cylinder is filled with non-viscous liquid of density d to a height ho and a hole is made at a height t, from the bottom of the cylinder. The velocity of liquid issuing out of the hole is

• A

  $\sqrt{2{\mathrm{gh}}_0}$

• B

  $\sqrt{2\mathrm{g}\left({\mathrm{h}}_0-{\mathrm{h}}_1\right)}$

• C

  $\sqrt{{\mathrm{dgh}}_1}$

• D

  $\sqrt{{\mathrm{dgh}}_0}$